Disable front-matter in diagnostic.md and rename ALEKS file

- Commented out `layout`, `nav_parent`, and `nav_weight` YAML keys in undergraduate/diagnostic.md, leaving the page as plain Markdown without Jekyll navigation metadata
- Renamed undergraduate/placement-files/diagnostic_aleks to diagnostic_aleks.html to clarify file type and ensure correct HTML handling

Signed-off-by: Leonid Petrov <[email protected]>

Author: lenis2000

undergraduate/diagnostic.md

@@ -1,10 +1,10 @@
 ---
 title: Diagnostic
-layout: ug_page
+# layout: ug_page
 ug_policy: true
 permalink: /undergraduate/diagnostic/
-nav_parent: Undergraduate
-nav_weight: 4
+# nav_parent: Undergraduate
+# nav_weight: 4
 tooltips: true
 ---
 <h1 class="mb-4">Diagnostic</h1>
@@ -18,14 +18,14 @@ tooltips: true
 <ol>
   <li>   <em>Do you need to fulfill a quantitative reasoning requirement and don't need a calculus-based course for your major?</em> We offer MATH 1110 Probability/Finite Mathematics, MATH 1140 Financial Mathematics, MATH 1150 The Shape of Space, and MATH 1160 Algebra, Number Systems and Number Theory.  </li>
   <p style="margin-left: -30px;">  <span class="bolded">Next Step</span> The next step is the diagnostic for Path 1 and more information about these courses  <a href="https://math.virginia.edu/undergraduate/diagnosticPath1">is here</a>. </p>
-  
+
   <li>  <em>Are you interested in business, biology, a social science, or need to fulfill  pre-health requirements?</em>  Path 2 includes Differential and Integral Calculus for non-STEM majors via MATH 1190, MATH 1210, and MATH 1220. </li>
-   
-  
+
+
    <p style="margin-left: -30px;">  <span class="bolded">Next Step</span> The next step is the diagnostic for Path 2 and more information about these courses <a href="https://math.virginia.edu/undergraduate/diagnosticPath2">is here</a>. </p>
 
- 
-   
+
+
   <li>  <em>Are you interested in one of the natural sciences, engineering, mathematics or doing graduate work in one of the social sciences?</em>  Path 3 includes Differential Calculus, Integral Calculus, and Multivariable Calculus. We offer MATH 1310, MATH 1320 and Math 2310 for this path. </li>
    <p style="margin-left: -30px;">  <span class="bolded">Next Step</span> The next step is the diagnostic for Path 3 and more information about these courses  <a href="https://math.virginia.edu/undergraduate/diagnosticPath3">is here</a>. </p>
 

undergraduate/placement-files/diagnostic_aleks renamed to undergraduate/placement-files/diagnostic_aleks.html

@@ -7,5 +7,6 @@
 nav_weight: 4
 tooltips: true
 ---
-<h1 class="mb-4">ALEKS Diagnostic</h1>
 
+
+<h1 class="mb-4">ALEKS Diagnostic</h1>